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Problems

2,133 problems

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Array1,212Hash Table473String437Math331Greedy330Dynamic Programming327Sorting302Depth-First Search208Binary Search189Breadth-First Search166Matrix163Tree158Prefix Sum155Two Pointers150Database137All topics

Medium · 2,133 results

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TitleSolutionAcceptDifficultyTopics
1077. Project Employees IIIVideoPremium
Solution76.8%Medium
Database· 1 company
1079. Letter Tile PossibilitiesVideo
Solution83.5%Medium
Backtracking, Counting +2· 5 companies
1080. Insufficient Nodes in Root to Leaf PathsVideo
Solution55.6%Medium
Binary Tree, Depth-First Search +1· 1 company
1081. Smallest Subsequence of Distinct CharactersVideo
Solution70.6%Medium
Greedy, Monotonic Stack +2· 5 companies
1087. Brace ExpansionVideoPremium
Solution66.5%Medium
Backtracking, Breadth-First Search +1· 6 companies
1090. Largest Values From LabelsVideo
Solution64.7%Medium
Array, Counting +3· 1 company
1091. Shortest Path in Binary MatrixVideo
Solution51.8%Medium
Array, Breadth-First Search +1· 15 companies
1093. Statistics from a Large SampleVideo
Solution43.6%Medium
Array, Math +1· 1 company
1094. Car PoolingVideo
Solution56.5%Medium
Array, Heap (Priority Queue) +3· 12 companies
1098. Unpopular BooksVideoPremium
Solution43.3%Medium
Database· 1 company
1100. Find K-Length Substrings With No Repeated CharactersVideoPremium
Solution76.5%Medium
Hash Table, Sliding Window +1· 1 company
1101. The Earliest Moment When Everyone Become FriendsVideoPremium
Solution66.0%Medium
Array, Sorting +1· 3 companies
1102. Path With Maximum Minimum ValueVideoPremium
Solution54.6%Medium
Array, Binary Search +5· 3 companies
1104. Path In Zigzag Labelled Binary TreeVideo
Solution75.9%Medium
Binary Tree, Math +1· 2 companies
1105. Filling Bookcase ShelvesVideo
Solution68.7%Medium
Array, Dynamic Programming· 5 companies
1107. New Users Daily CountVideoPremium
Solution44.7%Medium
Database· 1 company
1109. Corporate Flight BookingsVideo
Solution68.7%Medium
Array, Prefix Sum· 5 companies
1110. Delete Nodes And Return ForestVideo
Solution72.4%Medium
Array, Binary Tree +3· 4 companies
1111. Maximum Nesting Depth of Two Valid Parentheses StringsVideo
Solution82.9%Medium
Stack, String· 3 companies
1112. Highest Grade For Each StudentVideoPremium
Solution70.8%Medium
Database· 2 companies
1115. Print FooBar AlternatelyVideo
Solution67.7%Medium
Concurrency
1116. Print Zero Even OddVideo
Solution62.0%Medium
Concurrency· 2 companies
1117. Building H2OVideo
Solution57.1%Medium
Concurrency· 3 companies
1120. Maximum Average SubtreeVideoPremium
Solution66.7%Medium
Binary Tree, Depth-First Search +1· 1 company
1123. Lowest Common Ancestor of Deepest LeavesVideo
Solution79.5%Medium
Binary Tree, Breadth-First Search +3· 4 companies
1124. Longest Well-Performing IntervalVideo
Solution38.5%Medium
Array, Hash Table +3· 2 companies
1126. Active BusinessesVideoPremium
Solution65.8%Medium
Database· 1 company
1129. Shortest Path with Alternating ColorsVideo
Solution48.4%Medium
Breadth-First Search, Graph· 5 companies
1130. Minimum Cost Tree From Leaf ValuesVideo
Solution67.7%Medium
Array, Dynamic Programming +3· 4 companies
1131. Maximum of Absolute Value ExpressionVideo
Solution49.0%Medium
Array, Math· 2 companies
1132. Reported Posts IIVideoPremium
Solution32.3%Medium
Database· 1 company
1135. Connecting Cities With Minimum CostVideoPremium
Solution63.5%Medium
Graph, Heap (Priority Queue) +2· 1 company
1136. Parallel CoursesVideoPremium
Solution62.1%Medium
Graph, Topological Sort· 7 companies
1138. Alphabet Board PathVideo
Solution52.1%Medium
Hash Table, String· 1 company
1139. Largest 1-Bordered SquareVideo
Solution52.7%Medium
Array, Dynamic Programming +1· 4 companies
1140. Stone Game IIVideo
Solution75.8%Medium
Array, Dynamic Programming +3· 5 companies
1143. Longest Common SubsequenceVideo
Solution59.6%Medium
Dynamic Programming, String· 19 companies
1144. Decrease Elements To Make Array ZigzagVideo
Solution49.7%Medium
Array, Greedy· 1 company
1145. Binary Tree Coloring GameVideo
Solution52.9%Medium
Binary Tree, Depth-First Search +1· 2 companies
1146. Snapshot ArrayVideo
Solution36.8%Medium
Array, Binary Search +2· 20 companies
1149. Article Views IIVideoPremium
Solution47.1%Medium
Database· 1 company
1151. Minimum Swaps to Group All 1's TogetherVideoPremium
Solution61.2%Medium
Array, Sliding Window· 3 companies
1152. Analyze User Website Visit PatternVideoPremium
Solution44.3%Medium
Array, Hash Table +1· 5 companies
1155. Number of Dice Rolls With Target SumVideo
Solution62.2%Medium
Dynamic Programming· 5 companies
1156. Swap For Longest Repeated Character SubstringVideo
Solution44.9%Medium
Hash Table, Sliding Window +1· 2 companies
1158. Market Analysis IVideo
Solution58.1%Medium
Database· 4 companies
1161. Maximum Level Sum of a Binary TreeVideo
Solution70.0%Medium
Binary Tree, Breadth-First Search +2· 4 companies
1162. As Far from Land as PossibleVideo
Solution52.2%Medium
Array, Breadth-First Search +2· 7 companies
1164. Product Price at a Given DateVideo
Solution58.9%Medium
Database· 5 companies
1166. Design File SystemVideoPremium
Solution65.1%Medium
Design, Hash Table +2· 12 companies
Showing 601–650 of 2,133